[CIR][Dialect] Add SourceLangAttr #152511

seven-mile · 2025-08-07T14:14:40Z

This patch upstreams SourceLangAttr and its CodeGen logic in the CGM, which encodes the source language in CIR.

llvmbot · 2025-08-07T14:15:11Z

@llvm/pr-subscribers-clang

Author: 7mile (seven-mile)

Changes

This patch upstreams SourceLangAttr and its CodeGen logic in the CGM, which encodes the source language in CIR.

Full diff: https://github.com/llvm/llvm-project/pull/152511.diff

8 Files Affected:

(modified) clang/include/clang/CIR/Dialect/IR/CIRAttrs.td (+37)
(modified) clang/include/clang/CIR/Dialect/IR/CIRDialect.td (+1)
(modified) clang/lib/CIR/CodeGen/CIRGenModule.cpp (+24)
(modified) clang/lib/CIR/CodeGen/CIRGenModule.h (+3)
(added) clang/test/CIR/CodeGen/lang-c.c (+8)
(added) clang/test/CIR/CodeGen/lang-cpp.cpp (+8)
(added) clang/test/CIR/IR/invalid-lang-attr.cir (+5)
(added) clang/test/CIR/IR/module.cir (+12)

diff --git a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
index 588fb0d74a509..2040109298ad1 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
@@ -50,6 +50,43 @@ class CIR_UnitAttr<string name, string attrMnemonic, list<Trait> traits = []>
   let isOptional = 1;
 }
 
+//===----------------------------------------------------------------------===//
+// SourceLanguageAttr
+//===----------------------------------------------------------------------===//
+
+def CIR_SourceLanguage : CIR_I32EnumAttr<"SourceLanguage", "source language", [
+  I32EnumAttrCase<"C", 1, "c">,
+  I32EnumAttrCase<"CXX", 2, "cxx">
+]> {
+  // The enum attr class is defined in `CIR_SourceLanguageAttr` below,
+  // so that it can define extra class methods.
+  let genSpecializedAttr = 0;
+}
+
+def CIR_SourceLanguageAttr : CIR_EnumAttr<CIR_SourceLanguage, "lang"> {
+
+  let summary = "Module source language";
+  let description = [{
+    Represents the source language used to generate the module.
+
+    Example:
+    ```
+    // Module compiled from C.
+    module attributes {cir.lang = cir.lang<c>} {}
+    // Module compiled from C++.
+    module attributes {cir.lang = cir.lang<cxx>} {}
+    ```
+
+    Module source language attribute name is `cir.lang` is defined by
+    `getSourceLanguageAttrName` method in CIRDialect class.
+  }];
+
+  let extraClassDeclaration = [{
+    bool isC() const { return getValue() == SourceLanguage::C; }
+    bool isCXX() const { return getValue() == SourceLanguage::CXX; }
+  }];
+}
+
 //===----------------------------------------------------------------------===//
 // OptInfoAttr
 //===----------------------------------------------------------------------===//
diff --git a/clang/include/clang/CIR/Dialect/IR/CIRDialect.td b/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
index 3fdbf65573b36..c62d63ad42725 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
@@ -35,6 +35,7 @@ def CIR_Dialect : Dialect {
   let hasConstantMaterializer = 1;
 
   let extraClassDeclaration = [{
+    static llvm::StringRef getSourceLanguageAttrName() { return "cir.lang"; }
     static llvm::StringRef getTripleAttrName() { return "cir.triple"; }
     static llvm::StringRef getOptInfoAttrName() { return "cir.opt_info"; }
     static llvm::StringRef getCalleeAttrName() { return "callee"; }
diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.cpp b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
index 425250db87da6..19f4858a7848a 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
@@ -102,6 +102,9 @@ CIRGenModule::CIRGenModule(mlir::MLIRContext &mlirContext,
   PtrDiffTy =
       cir::IntType::get(&getMLIRContext(), sizeTypeSize, /*isSigned=*/true);
 
+  theModule->setAttr(
+      cir::CIRDialect::getSourceLanguageAttrName(),
+      cir::SourceLanguageAttr::get(&mlirContext, getCIRSourceLanguage()));
   theModule->setAttr(cir::CIRDialect::getTripleAttrName(),
                      builder.getStringAttr(getTriple().str()));
 
@@ -495,6 +498,27 @@ void CIRGenModule::setNonAliasAttributes(GlobalDecl gd, mlir::Operation *op) {
   assert(!cir::MissingFeatures::setTargetAttributes());
 }
 
+cir::SourceLanguage CIRGenModule::getCIRSourceLanguage() const {
+  using ClangStd = clang::LangStandard;
+  using CIRLang = cir::SourceLanguage;
+  auto opts = getLangOpts();
+
+  if (opts.OpenCL && !opts.OpenCLCPlusPlus)
+    llvm_unreachable("NYI");
+
+  if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||
+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)
+    return CIRLang::CXX;
+  if (opts.C99 || opts.C11 || opts.C17 || opts.C23 ||
+      opts.LangStd == ClangStd::lang_c89 ||
+      opts.LangStd == ClangStd::lang_gnu89)
+    return CIRLang::C;
+
+  // TODO(cir): support remaining source languages.
+  llvm_unreachable("CIR does not yet support the given source language");
+}
+
 static void setLinkageForGV(cir::GlobalOp &gv, const NamedDecl *nd) {
   // Set linkage and visibility in case we never see a definition.
   LinkageInfo lv = nd->getLinkageAndVisibility();
diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.h b/clang/lib/CIR/CodeGen/CIRGenModule.h
index 5d07d38012318..cad5afaa92615 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.h
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.h
@@ -423,6 +423,9 @@ class CIRGenModule : public CIRGenTypeCache {
   void replacePointerTypeArgs(cir::FuncOp oldF, cir::FuncOp newF);
 
   void setNonAliasAttributes(GlobalDecl gd, mlir::Operation *op);
+
+  /// Map source language used to a CIR attribute.
+  cir::SourceLanguage getCIRSourceLanguage() const;
 };
 } // namespace CIRGen
 
diff --git a/clang/test/CIR/CodeGen/lang-c.c b/clang/test/CIR/CodeGen/lang-c.c
new file mode 100644
index 0000000000000..cae9d23059bd9
--- /dev/null
+++ b/clang/test/CIR/CodeGen/lang-c.c
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// CIR: module attributes {{{.*}}cir.lang = #cir.lang<c>{{.*}}}
+
+int main() {
+  return 0;
+}
diff --git a/clang/test/CIR/CodeGen/lang-cpp.cpp b/clang/test/CIR/CodeGen/lang-cpp.cpp
new file mode 100644
index 0000000000000..561d8b66ab967
--- /dev/null
+++ b/clang/test/CIR/CodeGen/lang-cpp.cpp
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// CIR: module attributes {{{.*}}cir.lang = #cir.lang<cxx>{{.*}}}
+
+int main() {
+  return 0;
+}
diff --git a/clang/test/CIR/IR/invalid-lang-attr.cir b/clang/test/CIR/IR/invalid-lang-attr.cir
new file mode 100644
index 0000000000000..ffe523b1ad401
--- /dev/null
+++ b/clang/test/CIR/IR/invalid-lang-attr.cir
@@ -0,0 +1,5 @@
+// RUN: cir-opt %s -verify-diagnostics
+
+// expected-error@below {{expected ::cir::SourceLanguage to be one of}}
+// expected-error@below {{failed to parse CIR_SourceLanguageAttr parameter 'value'}}
+module attributes {cir.lang = #cir.lang<dummy>} { }
diff --git a/clang/test/CIR/IR/module.cir b/clang/test/CIR/IR/module.cir
new file mode 100644
index 0000000000000..7ce2c0ba21cb0
--- /dev/null
+++ b/clang/test/CIR/IR/module.cir
@@ -0,0 +1,12 @@
+// RUN: cir-opt %s -split-input-file -o %t.cir
+// RUN: FileCheck --input-file=%t.cir %s
+
+// Should parse and print C source language attribute.
+module attributes {cir.lang = #cir.lang<c>} { }
+// CHECK: module attributes {cir.lang = #cir.lang<c>}
+
+// -----
+
+// Should parse and print C++ source language attribute.
+module attributes {cir.lang = #cir.lang<cxx>} { }
+// CHECK: module attributes {cir.lang = #cir.lang<cxx>}

llvmbot · 2025-08-07T14:15:12Z

@llvm/pr-subscribers-clangir

Author: 7mile (seven-mile)

Changes

This patch upstreams SourceLangAttr and its CodeGen logic in the CGM, which encodes the source language in CIR.

Full diff: https://github.com/llvm/llvm-project/pull/152511.diff

8 Files Affected:

(modified) clang/include/clang/CIR/Dialect/IR/CIRAttrs.td (+37)
(modified) clang/include/clang/CIR/Dialect/IR/CIRDialect.td (+1)
(modified) clang/lib/CIR/CodeGen/CIRGenModule.cpp (+24)
(modified) clang/lib/CIR/CodeGen/CIRGenModule.h (+3)
(added) clang/test/CIR/CodeGen/lang-c.c (+8)
(added) clang/test/CIR/CodeGen/lang-cpp.cpp (+8)
(added) clang/test/CIR/IR/invalid-lang-attr.cir (+5)
(added) clang/test/CIR/IR/module.cir (+12)

diff --git a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
index 588fb0d74a509..2040109298ad1 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
@@ -50,6 +50,43 @@ class CIR_UnitAttr<string name, string attrMnemonic, list<Trait> traits = []>
   let isOptional = 1;
 }
 
+//===----------------------------------------------------------------------===//
+// SourceLanguageAttr
+//===----------------------------------------------------------------------===//
+
+def CIR_SourceLanguage : CIR_I32EnumAttr<"SourceLanguage", "source language", [
+  I32EnumAttrCase<"C", 1, "c">,
+  I32EnumAttrCase<"CXX", 2, "cxx">
+]> {
+  // The enum attr class is defined in `CIR_SourceLanguageAttr` below,
+  // so that it can define extra class methods.
+  let genSpecializedAttr = 0;
+}
+
+def CIR_SourceLanguageAttr : CIR_EnumAttr<CIR_SourceLanguage, "lang"> {
+
+  let summary = "Module source language";
+  let description = [{
+    Represents the source language used to generate the module.
+
+    Example:
+    ```
+    // Module compiled from C.
+    module attributes {cir.lang = cir.lang<c>} {}
+    // Module compiled from C++.
+    module attributes {cir.lang = cir.lang<cxx>} {}
+    ```
+
+    Module source language attribute name is `cir.lang` is defined by
+    `getSourceLanguageAttrName` method in CIRDialect class.
+  }];
+
+  let extraClassDeclaration = [{
+    bool isC() const { return getValue() == SourceLanguage::C; }
+    bool isCXX() const { return getValue() == SourceLanguage::CXX; }
+  }];
+}
+
 //===----------------------------------------------------------------------===//
 // OptInfoAttr
 //===----------------------------------------------------------------------===//
diff --git a/clang/include/clang/CIR/Dialect/IR/CIRDialect.td b/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
index 3fdbf65573b36..c62d63ad42725 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRDialect.td
@@ -35,6 +35,7 @@ def CIR_Dialect : Dialect {
   let hasConstantMaterializer = 1;
 
   let extraClassDeclaration = [{
+    static llvm::StringRef getSourceLanguageAttrName() { return "cir.lang"; }
     static llvm::StringRef getTripleAttrName() { return "cir.triple"; }
     static llvm::StringRef getOptInfoAttrName() { return "cir.opt_info"; }
     static llvm::StringRef getCalleeAttrName() { return "callee"; }
diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.cpp b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
index 425250db87da6..19f4858a7848a 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
@@ -102,6 +102,9 @@ CIRGenModule::CIRGenModule(mlir::MLIRContext &mlirContext,
   PtrDiffTy =
       cir::IntType::get(&getMLIRContext(), sizeTypeSize, /*isSigned=*/true);
 
+  theModule->setAttr(
+      cir::CIRDialect::getSourceLanguageAttrName(),
+      cir::SourceLanguageAttr::get(&mlirContext, getCIRSourceLanguage()));
   theModule->setAttr(cir::CIRDialect::getTripleAttrName(),
                      builder.getStringAttr(getTriple().str()));
 
@@ -495,6 +498,27 @@ void CIRGenModule::setNonAliasAttributes(GlobalDecl gd, mlir::Operation *op) {
   assert(!cir::MissingFeatures::setTargetAttributes());
 }
 
+cir::SourceLanguage CIRGenModule::getCIRSourceLanguage() const {
+  using ClangStd = clang::LangStandard;
+  using CIRLang = cir::SourceLanguage;
+  auto opts = getLangOpts();
+
+  if (opts.OpenCL && !opts.OpenCLCPlusPlus)
+    llvm_unreachable("NYI");
+
+  if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||
+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)
+    return CIRLang::CXX;
+  if (opts.C99 || opts.C11 || opts.C17 || opts.C23 ||
+      opts.LangStd == ClangStd::lang_c89 ||
+      opts.LangStd == ClangStd::lang_gnu89)
+    return CIRLang::C;
+
+  // TODO(cir): support remaining source languages.
+  llvm_unreachable("CIR does not yet support the given source language");
+}
+
 static void setLinkageForGV(cir::GlobalOp &gv, const NamedDecl *nd) {
   // Set linkage and visibility in case we never see a definition.
   LinkageInfo lv = nd->getLinkageAndVisibility();
diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.h b/clang/lib/CIR/CodeGen/CIRGenModule.h
index 5d07d38012318..cad5afaa92615 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.h
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.h
@@ -423,6 +423,9 @@ class CIRGenModule : public CIRGenTypeCache {
   void replacePointerTypeArgs(cir::FuncOp oldF, cir::FuncOp newF);
 
   void setNonAliasAttributes(GlobalDecl gd, mlir::Operation *op);
+
+  /// Map source language used to a CIR attribute.
+  cir::SourceLanguage getCIRSourceLanguage() const;
 };
 } // namespace CIRGen
 
diff --git a/clang/test/CIR/CodeGen/lang-c.c b/clang/test/CIR/CodeGen/lang-c.c
new file mode 100644
index 0000000000000..cae9d23059bd9
--- /dev/null
+++ b/clang/test/CIR/CodeGen/lang-c.c
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// CIR: module attributes {{{.*}}cir.lang = #cir.lang<c>{{.*}}}
+
+int main() {
+  return 0;
+}
diff --git a/clang/test/CIR/CodeGen/lang-cpp.cpp b/clang/test/CIR/CodeGen/lang-cpp.cpp
new file mode 100644
index 0000000000000..561d8b66ab967
--- /dev/null
+++ b/clang/test/CIR/CodeGen/lang-cpp.cpp
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// CIR: module attributes {{{.*}}cir.lang = #cir.lang<cxx>{{.*}}}
+
+int main() {
+  return 0;
+}
diff --git a/clang/test/CIR/IR/invalid-lang-attr.cir b/clang/test/CIR/IR/invalid-lang-attr.cir
new file mode 100644
index 0000000000000..ffe523b1ad401
--- /dev/null
+++ b/clang/test/CIR/IR/invalid-lang-attr.cir
@@ -0,0 +1,5 @@
+// RUN: cir-opt %s -verify-diagnostics
+
+// expected-error@below {{expected ::cir::SourceLanguage to be one of}}
+// expected-error@below {{failed to parse CIR_SourceLanguageAttr parameter 'value'}}
+module attributes {cir.lang = #cir.lang<dummy>} { }
diff --git a/clang/test/CIR/IR/module.cir b/clang/test/CIR/IR/module.cir
new file mode 100644
index 0000000000000..7ce2c0ba21cb0
--- /dev/null
+++ b/clang/test/CIR/IR/module.cir
@@ -0,0 +1,12 @@
+// RUN: cir-opt %s -split-input-file -o %t.cir
+// RUN: FileCheck --input-file=%t.cir %s
+
+// Should parse and print C source language attribute.
+module attributes {cir.lang = #cir.lang<c>} { }
+// CHECK: module attributes {cir.lang = #cir.lang<c>}
+
+// -----
+
+// Should parse and print C++ source language attribute.
+module attributes {cir.lang = #cir.lang<cxx>} { }
+// CHECK: module attributes {cir.lang = #cir.lang<cxx>}

clang/include/clang/CIR/Dialect/IR/CIRAttrs.td

clang/lib/CIR/CodeGen/CIRGenModule.cpp

clang/include/clang/CIR/Dialect/IR/CIRAttrs.td

bcardosolopes

LGTM

clang/include/clang/CIR/Dialect/IR/CIRAttrs.td

andykaylor

Looks good to me. I have a couple of suggestions, but they can be ignored or put off until later if you like.

andykaylor · 2025-08-12T21:45:13Z

clang/test/CIR/CodeGen/lang-cpp.cpp

@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir


This could be combined with the lang-c.c test using the -x c option.

andykaylor · 2025-08-12T21:46:56Z

clang/lib/CIR/CodeGen/CIRGenModule.cpp

+  if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||
+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)
+    return CIRLang::CXX;


Would we want to also encode the language standard used? That's not necessary for this PR, just something to consider.

Indeed, I'll give it a try in a later patch.

seven-mile

Thanks! Suggestions applied.

seven-mile · 2025-08-19T07:02:59Z

clang/lib/CIR/CodeGen/CIRGenModule.cpp

+  if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||
+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)
+    return CIRLang::CXX;


Indeed, I'll give it a try in a later patch.

xlauko

lgtm, with minor nits

xlauko · 2025-08-19T07:00:47Z

clang/lib/CIR/CodeGen/CIRGenModule.cpp

+  if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||
+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)


I would hope opts.CPlusPlus implies arbitrary standard. The additional checks are redundant. This could be simplified to just?

Suggested change

if (opts.CPlusPlus || opts.CPlusPlus11 || opts.CPlusPlus14 ||

opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||

opts.CPlusPlus26)

if (opts.CPlusPlus)

Make sense! Updated.

xlauko · 2025-08-19T07:03:18Z

clang/lib/CIR/CodeGen/CIRGenModule.cpp

+      opts.CPlusPlus17 || opts.CPlusPlus20 || opts.CPlusPlus23 ||
+      opts.CPlusPlus26)
+    return CIRLang::CXX;
+  if (opts.C99 || opts.C11 || opts.C17 || opts.C23 ||


Suggested change

if (opts.C99 || opts.C11 || opts.C17 || opts.C23 ||

if (opts.C99 || opts.C11 || opts.C17 || opts.C23 || opts.C2y

bcardosolopes · 2025-08-20T23:28:11Z

@seven-mile do you need help landing this? btw looks like it needs an update to wrap up testing

seven-mile · 2025-08-21T04:05:29Z

@bcardosolopes Yes, I don't have access, please help me get the patch committed😉. CI test should be triggerred now.

andykaylor · 2025-08-22T19:52:40Z

clang/lib/CIR/CodeGen/CIRGenModule.cpp

+
+  // TODO(cir): support remaining source languages.
+  assert(!cir::MissingFeatures::sourceLanguageCases());
+  errorNYI("CIR does not yet support the given source language");


This needs to return a value? @bcardosolopes Should we adda CIRLang::Other?

[CIR][Dialect] Add SourceLangAttr

f501e18

seven-mile requested review from andykaylor, bcardosolopes, lanza and xlauko as code owners August 7, 2025 14:14

llvmbot added clang Clang issues not falling into any other category ClangIR Anything related to the ClangIR project labels Aug 7, 2025

bcardosolopes reviewed Aug 7, 2025

View reviewed changes

seven-mile added 2 commits August 8, 2025 01:06

use errorNYI and add missing feature flag

6fe6b00

adjust todo position

1a04b37

bcardosolopes approved these changes Aug 12, 2025

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clang/include/clang/CIR/Dialect/IR/CIRAttrs.td Show resolved Hide resolved

andykaylor approved these changes Aug 12, 2025

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combine tests

f11b730

seven-mile commented Aug 19, 2025

View reviewed changes

xlauko approved these changes Aug 19, 2025

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simplify option conditions

29e72b9

seven-mile force-pushed the lang-attr branch from 1187cca to 29e72b9 Compare August 21, 2025 03:11

andykaylor merged commit 761125f into llvm:main Aug 21, 2025
9 checks passed

andykaylor reviewed Aug 22, 2025

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andykaylor mentioned this pull request Aug 22, 2025

[CIR][NFC] Fix build warning in getCIRSourceLanguage #155029

Merged

		@@ -0,0 +1,8 @@
		// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir

	if (opts.C99 \|\| opts.C11 \|\| opts.C17 \|\| opts.C23 \|\|
	if (opts.C99 \|\| opts.C11 \|\| opts.C17 \|\| opts.C23 \|\| opts.C2y

[CIR][Dialect] Add SourceLangAttr #152511

[CIR][Dialect] Add SourceLangAttr #152511

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